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Numerical Investigation of the Role of Topography in Tornado Events in Greece

  • I. T. Matsangouras
  • I. Pytharoulis
  • P. T. Nastos
Conference paper
Part of the Springer Atmospheric Sciences book series (SPRINGERATMO)

Abstract

Several tornadic events have been reported in Greece during the last decades and are usually associated with strong synoptic scale forcing. Although most of them occur over the sea (waterspouts), a number of events appear over the land, causing serious damages to the nearby infrastructure and posing an important threat to human beings. It is well known that the meteorological conditions over Greece are affected at various scales by the significant variability of topography. However, there is still uncertainty regarding its importance on tornadoes. The aim of this study is to investigate the relative role of topography and synoptic scale forcing in the occurrence of tornadoes in Greece. Two events that occurred during the last years at Thiva (Boeotia, 17/11/2007) and Vrastera (Chalkidiki, 12/02/2010) were selected for numerical experiments. These events were associated with frontal activity and caused serious damages. The non-hydrostatic WRF-ARW atmospheric numerical model is utilized at very high resolution using telescoping nests in order to perform the sensitivity experiments. Two sets of experiments are conducted: (a) with the actual topography and (b) without it.

Keywords

Cold Front Synoptic Scale Bulk Richardson Number Tornado Event Short Wave Trough 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors would like to acknowledge the European Centre for Medium Range Weather Forecasts (ECMWF), the UK Met Office (UKMO) and the Hellenic National Meteorological Service (HNMS) for the processed data that were used in order to complete this study. Additionally, we would like to thank NCAR for providing the WRF-ARW model.

References

  1. Bertato M, Giaiotti D, Manzato A, Stel F (2003) An interesting case of tornado in Friuli-Norteastern Italy. Atmos Res 67:3–21. doi: 10.1016/S0169-8095(03)00043-7 CrossRefGoogle Scholar
  2. Betts A, Miller M (1993) The Betts-Miller scheme. The representation of cumulus convection in numerical models. Meteorol Monogr Am Meteorol Soc 24:107–121Google Scholar
  3. Brooks H, Lee J, Craven JP (2003) The spatial distributions of severe thunderstorm and tornado environments from global reanalysis data. Atmos Res 67:73–94CrossRefGoogle Scholar
  4. Chen F, Mitchell K, Schaake J, Xue Y, Pan H, Koren V, Duan Y, Ek M, Betts A (1996) Modeling of land-surface evaporation by four schemes and comparison with FIFE observations. J Geophys Res 101:7251–7268. doi: 10.1029/95JD02165 CrossRefGoogle Scholar
  5. Dessens J, Snow J (1987) Tornadoes in France. Weather Forecast 4:110–132CrossRefGoogle Scholar
  6. Doswell C III, Evans J (2003) Proximity sounding analysis for derechos and supercells: an assessment of similarities and differences. Atmos Res 67:117–133CrossRefGoogle Scholar
  7. Dotzek N (2001) Tornadoes in Germany. Atmos Res 56:233–251CrossRefGoogle Scholar
  8. Dotzek N (2003) An updated estimate of tornado occurrence in Europe. Atmos Res 67:153–161CrossRefGoogle Scholar
  9. Droegemeier K, Lazarus S, Davies J (1993) The influence of helicity on numerically simulated convective storms. Mon Weather Rev 121:2005–2029CrossRefGoogle Scholar
  10. Ferrier B, Lin Y, Black T, Rogers E, DiMego G (2002) Implementation of a new grid-scale cloud and precipitation scheme in the NCEP Eta model. Preprints, 15th conference on numerical weather prediction, American Meteorological Society, San Antonio, TX, pp 280–283Google Scholar
  11. Fujita T (1973) Tornadoes around the world. Weatherwise 26:56–83CrossRefGoogle Scholar
  12. Gayà M, Homar V, Romero R, Ramis C (2000) Tornadoes and waterspouts in the Balearic Islands: phenomena and environment characterization. Atmos Res 56:253–267CrossRefGoogle Scholar
  13. Giaiotti D, Giovannoni M, Pucillo A, Stel F (2007) The climatology of tornadoes and waterspouts in Italy. Atmos Res 83:534–541. doi: 10.1016/j.atmosres.2005.10.020 CrossRefGoogle Scholar
  14. Holzer A (2001) Tornado climatology of Austria. Atmos Res 56:203–211CrossRefGoogle Scholar
  15. Janjic Z (1994) The step-mountain eta coordinate model: further development of the convection, viscous sublayer and turbulence closure schemes. Mon Weather Rev 122:927–945CrossRefGoogle Scholar
  16. Janjic Z (2002) Nonsingular implementation of the Mellor-Yamada level 2.5 scheme in the NCEP Meso model. NCEP Office Note 437:61Google Scholar
  17. Johns R, Davies J, Leftwich P (1993) Some wind and instability parameters associated with strong and violent tornadoes. Part II: variations in the combinations of wind and instability parameters. The tornado: its structure, dynamics, prediction and hazards. Geophys Monogr 79:583–590CrossRefGoogle Scholar
  18. Matsangouras I, Nastos P (2010) The 27 July 2002 tornado event in Athens, Greece. Adv Sci Res 4:9–13. doi: 10.5194/asr-4-9-2010 CrossRefGoogle Scholar
  19. Matsangouras I, Nastos P, Nikolakis D (2010) Study of meteorological conditions related to the tornado activity on 25-3-2009 over NW Peloponnesus, Greece. In: Proceedings of 10th international conference on meteorology, climatology and atmospheric physics (COMECAP), Patra, pp 417–425 (in Greek), 25–38 May 2010Google Scholar
  20. Matsangouras I, Nastos P, Pytharoulis I (2011a) Synoptic-mesoscale analysis and numerical modeling of a tornado event on 12 February 2010 in northern Greece. Adv Sci Res 6:187–194. doi: 10.5194/asr-6-187-2011 CrossRefGoogle Scholar
  21. Matsangouras I, Nastos P, Sioutas M (2011b) 300 years historical records of tornadoes waterspouts and funnel clouds over Greece. In: Proceedings of 6th European conference on severe storms (ECSS), Palma de Mallorca, Spain, 3–7 October 2011Google Scholar
  22. Meaden G (1976) Tornadoes in Britain: their intensities and distribution in space and time. J Meteorol 1:242–251Google Scholar
  23. Mlawer E, Taubman S, Brown P, Iacono M, Clough S (1997) Radiative transfer for inhomogeneous atmospheres: RRTM, a validated correlated-k model for the longwave. J Geophys Res 102:16663–16682. doi: 10.1029/97JD00237 CrossRefGoogle Scholar
  24. Monin A, Obukhov A (1954) Basic laws of turbulent mixing in the groundlayer of the atmosphere. Trans Geophys Inst Akad Nauk USSR 151:163–187Google Scholar
  25. Nastos P, Matsangouras I (2010) Tornado activity in Greece within the 20th century. Adv Geosci 26:49–51. doi: 10.5194/adgeo-26-49-2010 CrossRefGoogle Scholar
  26. Rasmussen E, Blanchard D (1998) A baseline climatology of sounding-derived supercell and tornado forecast parameters. Weather Forecast 13:1148–1164CrossRefGoogle Scholar
  27. Reynolds D (1999) European tornado climatology, 1960–1989. J Meteorol 24:376–403Google Scholar
  28. Shafer C, Mercer A, Doswell C III, Richman M, Leslie L (2009) Evaluation of WRF forecasts of tornadic and nontornadic outbreaks when initialized with synoptic-scale input. Mon Weather Rev 137:1250–1271. doi: 10.1175/2008MWR2597.1 CrossRefGoogle Scholar
  29. Sioutas M (2011) A tornado and waterspout climatology for Greece. Atmos Res 100:344–356CrossRefGoogle Scholar
  30. Skamarock W, Klemp J, Dudhia J et al (2008) A description of the advanced research WRF version 3. National Center for Atmospheric Research MMM Division, BoulderGoogle Scholar
  31. Thompson R, Edwards R, Hart J, Elmore K, Markowski P (2003) Close proximity soundings with supercell environments obtained from the Rapid Update Cycle. Weather Forecast 18:1243–1261. doi:10.1175/1520-0434(2003) 018<1243:CPSWSE>2.0.CO;2CrossRefGoogle Scholar
  32. Wang W, Bruyere C, Duda M, Dudhia J, Gill D, Lin H, Michalakes J, Rizvi S, Zhang X, Beezley J, Coen J, Mandel J (2010) ARW version 3 modeling system user’s guide. National Center for Atmospheric Research MMM Division, BoulderGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • I. T. Matsangouras
    • 1
  • I. Pytharoulis
    • 2
  • P. T. Nastos
    • 1
  1. 1.Laboratory of Climatology and Atmospheric EnvironmentUniversity of AthensAthensGreece
  2. 2.Department of Meteorology and Climatology, School of GeologyAristotle University of ThessalonikiThessalonikiGreece

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